Home / 12,250.57-18,378.60-3,931.33

Finding the Fourth Proportional to 12,250.57, 18,378.60 and 3,931.33

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Solution

The fourth proportional to 12,250.57, 18,378.60 and 3,931.33 is: 5,897.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,250.57 : 18,378.60 = 3,931.33 : x
  2. Step 2: Convert to fraction form
    12,250.57/18,378.60 = 3,931.33/x
  3. Step 3: Cross multiply
    12,250.57x = 18,378.60 × 3,931.33
  4. Step 4: Simplify right side
    12,250.57x = 72,252,341.54
  5. Step 5: Solve for x
    x = 72,252,341.54/12,250.57
  6. Step 6: Final answer
    x = 5,897.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.